7XEJ | pdb_00007xej

SufS with D-cysteine for 5 min

PDB DOI: https://doi.org/10.2210/pdb7XEJ/pdb

Classification: BIOSYNTHETIC PROTEIN
Organism(s): Bacillus subtilis subsp. subtilis str. 168
Expression System: Escherichia coli BL21(DE3)
Mutation(s): No

Deposited: 2022-03-31 Released: 2023-04-05
Deposition Author(s): Nakamiura, R., Fujishiro, T.
Funding Organization(s): Japan Society for the Promotion of Science (JSPS)

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 1.74 Å
R-Value Free:
0.176 (Depositor), 0.176 (DCC)
R-Value Work:
0.145 (Depositor), 0.145 (DCC)
R-Value Observed:
0.146 (Depositor)

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 1.2 of the entry. See complete history.

Literature

Visualizing thiazolidine ring formation in the reaction of D-cysteine and pyridoxal-5'-phosphate within L-cysteine desulfurase SufS.

Nakamura, R., Fujishiro, T.

(2025) Biochem Biophys Res Commun 754: 151497-151497

PubMed: 40020322 Search on PubMed
DOI: https://doi.org/10.1016/j.bbrc.2025.151497
Primary Citation Related Structures:
7XEJ, 7XEK, 7XEL, 7XEN, 7YB3

PubMed Abstract:
The reactivity of pyridoxal-5'-phosphate (PLP) with cysteine and its derivatives has been of increasing interest because the corresponding product, a thiazolidine PLP-cysteine adduct, can be formed via PLP-dependent enzymatic and non-enzymatic reactions. Here, we report biochemical and X-ray crystallographic snapshots of thiazolidine formation in reaction of D-cysteine with PLP in SufS, a PLP-dependent L-cysteine desulfurase. By comparing L- and D-penicillamine-bound SufS showing no thiazolidine formation in the crystals with D-cysteine SufS, we proposed a thiazolidine formation mechanism with important factors: the polar environments provided by the carbonyl groups of Ala28-Ala29 and Lys224-mediated base catalysis for the nucleophilic thiolate of D-cysteine.

Organizational Affiliation

Department of Biochemistry and Molecular Biology, Graduate School of Science and Engineering, Saitama University, Japan.

Macromolecule Content

Total Structure Weight: 47.89 kDa
Atom Count: 3,706
Modeled Residue Count: 413
Deposited Residue Count: 419
Unique protein chains: 1

Macromolecules

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| 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Cysteine desulfurase SufS	A	419	Bacillus subtilis subsp. subtilis str. 168	Mutation(s): 0 Gene Names: sufS, csd, yurW, BSU32690 EC: 2.8.1.7
UniProt
Find proteins for O32164 (Bacillus subtilis (strain 168)) Explore O32164 Go to UniProtKB: O32164
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	O32164
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
9PV (Subject of Investigation/LOI) Query on 9PV Download:Ideal Coordinates CCD File SDF format, chain B [auth A] MOL2 format, chain B [auth A] mmCIF format, chain B [auth A]	B [auth A]	(2~{S})-2-[(~{E})-[2-methyl-3-oxidanyl-5-(phosphonooxymethyl)pyridin-4-yl]methylideneamino]-3-sulfanyl-propanoic acid C₁₁ H₁₅ N₂ O₇ P S NUTWYOJHALJXFM-RZTFRGLUSA-N		Interactions Focus chain B [auth A] Interactions & Density Focus chain B [auth A]
PGE Query on PGE Download:Ideal Coordinates CCD File SDF format, chain K [auth A] MOL2 format, chain K [auth A] mmCIF format, chain K [auth A]	K [auth A]	TRIETHYLENE GLYCOL C₆ H₁₄ O₄ ZIBGPFATKBEMQZ-UHFFFAOYSA-N		Interactions Focus chain K [auth A] Interactions & Density Focus chain K [auth A]
PEG Query on PEG Download:Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain G [auth A] SDF format, chain H [auth A] SDF format, chain I [auth A] SDF format, chain J [auth A] SDF format, chain F [auth A] SDF format, chain E [auth A] MOL2 format, chain D [auth A] MOL2 format, chain G [auth A] MOL2 format, chain H [auth A] MOL2 format, chain I [auth A] MOL2 format, chain J [auth A] MOL2 format, chain F [auth A] MOL2 format, chain E [auth A] mmCIF format, chain D [auth A] mmCIF format, chain G [auth A] mmCIF format, chain H [auth A] mmCIF format, chain I [auth A] mmCIF format, chain J [auth A] mmCIF format, chain F [auth A] mmCIF format, chain E [auth A]	D [auth A] E [auth A] F [auth A] G [auth A] H [auth A] D [auth A], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A]	DI(HYDROXYETHYL)ETHER C₄ H₁₀ O₃ MTHSVFCYNBDYFN-UHFFFAOYSA-N		Interactions Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Focus chain J [auth A] Interactions & Density Focus chain D [auth A] Focus chain E [auth A] Focus chain F [auth A] Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Focus chain J [auth A]
EDO Query on EDO Download:Ideal Coordinates CCD File SDF format, chain C [auth A] MOL2 format, chain C [auth A] mmCIF format, chain C [auth A]	C [auth A]	1,2-ETHANEDIOL C₂ H₆ O₂ LYCAIKOWRPUZTN-UHFFFAOYSA-N		Interactions Focus chain C [auth A] Interactions & Density Focus chain C [auth A]